var menu_positions = {
	'plans' : 0,
	'tools' : -237,
	'wellness' : -430,
	'locate' : -624
};

function menu_init() {
	var topnav = document.getElementById('topnav');
	for(var x=topnav.childNodes.length - 1; x>=0; x--) {
		var li = topnav.childNodes[x];
		if(li.nodeName == 'LI') {
			var uls = li.getElementsByTagName('ul');
			if(uls.length > 0) {
				li.onmouseover = function() {
					this.getElementsByTagName('ul')[0].style.display = 'block';
					var link = this.getElementsByTagName('a')[0];
					if(menu_positions[this.id] != null && link && link.className != 'selected') {
						link.style.backgroundPosition = menu_positions[this.id] + 'px -40px';
					}
				}
				li.onmouseout = function() {
					this.getElementsByTagName('ul')[0].style.display = 'none';
					var link = this.getElementsByTagName('a')[0];
					if(menu_positions[this.id] != null && link && link.className != 'selected') {
						link.style.backgroundPosition = menu_positions[this.id] + 'px 0px';
					}
				}
			}
		}
	}
}


menu_init();